Cable-hoist



l2S Sheets Sheet l.

(mman W. DUSBDAU.

CABLE HOIST.

Patentegept. l, 1896 (No Model.) 3 Sheets-Sheet 2.

W. DSBDAU.

CABLE HOIST.

No. 566,848. Patented Sept. 1, 1896.

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UNITED STATES PATENT EErcE.

YVILIIELM DSEDAU, OF TRENTON, NEW' JERSEY.

CABLE-HOIST.

SPECIFICATION forming part of Letters Patent No. 566,848, dated September 1, 1896.

Application 'rileddannary 2, 1896. Serial No. 574,145. (No model.)

To fz/ZZ wiz/0m, it 'may concern:

Be it known that l, WILHELM DSEDAU, a citizen of Prussia, residing at Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful Iniprovements in Cable-Hoists, of which the following is a specin'cation, reference being had therein to the accompanying drawings.

My invention relates to the carriers used in cable-hoists to sustain the hoisting-rope, said carriers being arranged to run upon the cable and to move with the carriage, so as to maintain a proper relation thereto. My improvement, hereinafter explained, is designed to simplify the construction of such carriers and to render them more certain and eieciive in their operation.

Said invention is illustrated in the accompanying drawings, in which- Figure 1 represen ts the carrier, with parts of the ropes in contact, in side elevation. Fig. 2 is an edge view of the same. Figs. 3, Li, and 5 show, respectively' detached, the chain and the compensatingspring. Figs. 6 and 7 show side views and plan of sheave-frame. Fig. 8 shows side elevation of a modiied form of my invention; Fig. 9, a section on line 1 1, and Fig. 10 a section on line 2 2, of Fig. S. Fig. 1l shows edge view of Fig. 8.

In the drawings the cable is shown at a, and upon it runs the main supporting-sheave d of the carrier, which is in the upper end of the frame A. The sheave h on the lower end supports the hoisting-rope c. The sheave d is directly mounted on a supplemental frame d2, held at the sides to the main frame A by means of bolts 26, which pass through the sides of d2 and through slots in the sides of A, it being held in any desired position by jam-nuts.

The supplemental frame may be adjusted vertically after loosening the bolts 26 by means of the holt 67,3 with its nuts bearing on the cross-piece of the main frame, through which the bolt passes.

Below the cable o, and opposite the upper sheave is another sheave e, mounted in arms 3, supported on a boite, which passes through vertical slots in the main frame. The sides of the main frame have flanges which hold these arms in place. 0n a sleeve which turns on the bolt 4 are iXed two cog-wheels g and h', of which cog-wheel g' is in mesh with a cog-wheel e', fast on the sleeve which carries the sheave e. The other cogwheel, 7L', is in mesh with cog-wheels 13, fixed to sleeves carrying the sheaves f f2, which run on the hauling-rope b. These sheaves mounted on the sleeves are carried on bolts across leverframes 9 and 10, which, at their inner ends, are pivoted on the cross-bolt 4 and thus act as levers. The outer ends being depressed, they fnlcrurn on the sheaves f' and f2 and lift upon their inner ends. Pressure is applied to their outer ends by means of bolts 6, which connect them to the ends of a rigid frame 14, supported on the bolt et. By turning down the nuts on bolts 6 the ends of the lever-frames are pressed down and with them the sheaves f' f2, causing said sheaves to bear on the hauling-rope and bending or pinching it over the sheave g, which is mounted on a sleeve on the cross-bolt 16, xed in the main frame. This gives a grip on the hauling-rope i) and at the same time presses upon the arms 3 3, and thus presses the sheave e against the under side of the cable a, and the cable is gripped for frictional contact between sheaves d and e.

Sheave e is caused to rotate by means of a cog-wheel e', fined on the sleeve of sheave e and in mesh with the cog-wheel g. Motion is also imparted to the sheave d by means of a chain connecting sprocket t' on sleeve of sheave d with sprocket k on sleeve of sheave g. The proper amount of pressure is put upon the sheave by means of the nuts 15 aforesaid and they are subject but little to the eiects of expansion and contraction due to changes of temperature during the day; but the chain is subject materially to such effects, and I provide a compensating devicefor such changes, which device consists of a spring 17, which is interposed between sheaves t t", mounted in frames 18, supported to swing inward from the main frame. The frame is on arms 19, suspended from a cross-bar 20.

In Fig. 8 et seq. I have shown a modification of the frame, the upper and the lower sheaves being omitted. In this the sheaves bear on the cable and on the hauling-rope in the same manner as in the frame above de scribed, but the frames bearing the sheaves IGO f f2 are adjusted through rods 2l 2l on each side of the main frame. Each pair of these rods is connected to a yoke 22, suspended from the bolt 4. The sheaves j" f2 are mounted in a frame like 9 l0. The rods 2l 2l are connected at their lower ends to the lever-frames 9 and l0 at intermediate points, as shown in Fig. S. Other rods 24 (two on each side) are suspended from the bolts of the wheels f' f2 and are adjustably connected with the outer ends of the leverframes 9 and l0. They have nuts 25, by means of which strain is put on the haulingrope b through the sheaves f f2.

The bolt 4 passes through slots in the sides of the main frame. The bolt 16, on which the lever-frames 9 and lOa are pivoted, is fixed on the main frame. These, upon upward pressure on the ends of 9a and l0, will force up the yokes 22, and also the sheaves e, through the arms 3 3. This by reason of the leverage puts great pressure upon the sheave e, and this pressure may be determined by the position of the intermediate pivot of the rods 2l.

The sheave e may be driven in the manner represented in the former figures. Some of the intermediate driving parts are shown in Fig. ll. The rotation of the cog-wheels is caused by movement of the hauling-rope l) through the grip taken upon it by the sheaves fl) f2, g'

The hoisting-rope c is sustained by the lower sheave h in the usual manner.

I claim-- l. A carrier for the hoisting-rope of a cable-hoist comprising a main frame, upper and lower sheaves bearing upon the cable a, and gripping-sheaves bearing upon both sides of the hauling-rope b, and pivoted frame let and means for applyingr pressure to the pivoted frame and connection between the pivoted frame and one of the sheaves bearing upon the cable7 substantially as described.

2. In combination in a carrier for cablehoists, a main frame, a sheave as d mounted adjustable in the upper end of said frame,

and bearing upon the upper side of the cable a., a sheave as e mounted on arms 3, grippersheaves bearing upon the hauling-rope b and connections between the frame of the gripping-sheaves on one side of the hauling-rope and one of the sheaves bearing upon the cable, whereby pressure is exerted upon the cable-sheave, substantially as described.

3. In combination in a carrier for cablehoists, a main frame, lever-frames mounted upon the main frame on the transverse bolt, said bolt supporting the sheave as e mounted on arms 3, sheaves f f2 mounted in the leverframes, a rigid frame connected to the leverframes by bolts and nuts for applying strain, and a sheave as g, in the main frame bearing` upon the hauling-rope and driving connections for the sheave e, substantially as described.

4. In combination, the frames 9 and l0 pivoted to the bolt Ll, the rigid frame With the bolts and nuts connecting it to the frames 9 and l0, the arms 3 mounted on the bolt 4. and carrying the sheave e, and gears connecting the sheaves f', f2, in the lever-frames with the sheave e in the arms, substantially as described.

5. In combination, a sheave bearing upon the cable and gripping-sheaves arranged to bear upon the hauling-rope, a chain connection between the cable-sheave and one of the gripping-sheaves and a spring compensating device upon the chain, substantially as described.

6. In a carrier for cable-hoists,sheaves bearing upon the cable and adjustable grippingsheaves bearing upon the hauling-rope, means for adjusting the gripping-sheave, and means for communicating motion therefrom to one of the cable-sheaves, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILHELM DsEDAU.

Vitnesses:

LoUIs Worin, C. H. I-IALL. 

